• Title/Summary/Keyword: 지구환경

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환경.과학소식-지구를 살리는 "8가지기술"

  • Korea Environmental Preservation Association
    • Bulletin of Korea Environmental Preservation Association
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    • v.29 s.369
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    • pp.69-70
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    • 2007
  • 올해 다보스포럼에서는 지구 온난화 문제가 가장 큰 화두로 떠오른 가운데 지구를 살리는 8가지 신기술을 보도해 화제다. 미 경제 주간지 '비즈니스2.0' 은 최신호를 통해 '지구를 살리는 8가지 기술' 을 소개했다. 이 잡지가 소개한 기술을 살펴보면 환경오염 방지를 위한 연료, 오염물질 감지센서, 중금속을 흡수하는 나무, 멸종위기 위치 추적시스템 등이다.

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A Study of Open space for New town collective housing area (신도시 주거단지 외부공간의 비교연구)

  • Lee, Hee-Won;Suh, Hye-Rim
    • Proceedings of the KAIS Fall Conference
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    • 2006.11a
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    • pp.294-298
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    • 2006
  • 본 논문에서는 한국의 신도시를 비롯해서 일본과 유럽의 신도시를 사례로 선정하여 그 주거단지들에서 찾을 수 있는 친환경적인 요소를 중심으로 비교분석하였다. 친환경 주거단지란 지구환경을 보전하고자 하는 생각에서 시작되어 지구환경의 보전과 주변 환경과의 친화를 목적으로 거주자들이 자연환경과 어울려 쾌적하게 생활할 수 있도록 하는 단지환경을 말한다. 이 논문에서는 친환경 요소를 중심으로 사례들을 비교 분석하여 해외 사례의 친환경 단지로서의 시사점을 찾고 한국의 분당과 판교 신도시에 대한 문제점을 고찰하고자한다.

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Calculations of the Single-Scattering Properties of Non-Spherical Ice Crystals: Toward Physically Consistent Cloud Microphysics and Radiation (비구형 빙정의 단일산란 특성 계산: 물리적으로 일관된 구름 미세물리와 복사를 향하여)

  • Um, Junshik;Jang, Seonghyeon;Kim, Jeonggyu;Park, Sungmin;Jung, Heejung;Han, Suji;Lee, Yunseo
    • Atmosphere
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    • v.31 no.1
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    • pp.113-141
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    • 2021
  • The impacts of ice clouds on the energy budget of the Earth and their representation in climate models have been identified as important and unsolved problems. Ice clouds consist almost exclusively of non-spherical ice crystals with various shapes and sizes. To determine the influences of ice clouds on solar and infrared radiation as required for remote sensing retrievals and numerical models, knowledge of scattering and microphysical properties of ice crystals is required. A conventional method for representing the radiative properties of ice clouds in satellite retrieval algorithms and numerical models is to combine measured microphysical properties of ice crystals from field campaigns and pre-calculated single-scattering libraries of different shapes and sizes of ice crystals, which depend heavily on microphysical and scattering properties of ice crystals. However, large discrepancies between theoretical calculations and observations of the radiative properties of ice clouds have been reported. Electron microscopy images of ice crystals grown in laboratories and captured by balloons show varying degrees of complex morphologies in sub-micron (e.g., surface roughness) and super-micron (e.g., inhomogeneous internal and external structures) scales that may cause these discrepancies. In this study, the current idealized models representing morphologies of ice crystals and the corresponding numerical methods (e.g., geometric optics, discrete dipole approximation, T-matrix, etc.) to calculate the single-scattering properties of ice crystals are reviewed. Current problems and difficulties in the calculations of the single-scattering properties of atmospheric ice crystals are addressed in terms of cloud microphysics. Future directions to develop physically consistent ice-crystal models are also discussed.

Remote Sensing and GIS for Earth & Environmental Disasters: The Current and Future in Monitoring, Assessment, and Management 2 (원격탐사와 GIS를 이용한 지구환경재해 관측과 관리 기술 현황 2)

  • Yang, Minjune;Kim, Jae-Jin;Ryu, Jong-Sik;Han, Kyung-soo;Kim, Jinsoo
    • Korean Journal of Remote Sensing
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    • v.38 no.5_3
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    • pp.811-818
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    • 2022
  • Recently, the number of natural and environmental disasters is rapidly increasing due to extreme weather caused by climate change, and the scale of economic losses and damage to human life is increasing accordingly. In addition, with urbanization and industrialization, the characteristics and scale of extreme weather appearance are becoming more complex and large in different ways from the past, and need for remote sensing and artificial intelligence technology for responding and managing global environmental disasters. This special issue investigates environmental disaster observation and management research using remote sensing and artificial intelligence technology, and introduces the results of disaster-related studies such as drought, flood, air pollution, and marine pollution, etc. in South Korea performed by the i-SEED (School of Integrated Science for Sustainable Earth and Environmental Disaster at Pukyong National University). In this special issue, we expect that the results can contribute to the development of monitoring and management technologies that may prevent environmental disasters and reduce damage in advance.

The Temperature and Flow to Affect Removal Efficiency of Carbon Dioxide in a Pilot Plant (Pilot Plant를 이용한 이산화탄소 흡수분리에 있어 온도와 유량 효과)

  • 김준한;심재구;송광철;엄희문
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2003.11a
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    • pp.522-523
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    • 2003
  • 1992년 리우에서 결의된 기후변화협약은 전 인류의 공통된 그러나, 차별화된 온실가스감축 노력을 약속한 국제 환경협약인 동시에 국가경제활동을 좌우할 경제협약 나아가 기술협약의 성격을 지니고 있다. 에너지 이용과 밀접한 관계를 가지는 지구 온난화문제는 최근 미국의 교토의정서 탈퇴 선언으로 인해 기본구조가 흔들리는 위기를 맞기도 하였지만, 유럽연합을 비롯한 대부분의 국가는 지구환경 보존이라는 명분에 따라 정치적 합의를 도출함에 따라 우리나라에서도 지구 온난화 방지를 위한 온실 기체 저감 기술의 개발이 필요한 실정이다.(중략)

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